Anthropic's SDK for building production-grade AI agents
Agent Frameworks
The Claude Agent SDK provides a lightweight, Python-first framework for building agents with Claude. Features include tool use, multi-turn conversations, guardrails, and structured handoffs between agents.
OpenAI's official SDK for building multi-agent workflows
Agent Frameworks
The OpenAI Agents SDK provides primitives for building agentic AI applications: agents with instructions and tools, handoffs between agents, guardrails for input/output validation, and tracing for debugging.
Registry and marketplace for Model Context Protocol (MCP) servers
Agent Frameworks
Smithery is the central hub for discovering and sharing MCP servers. It enables AI agents to connect to external tools, APIs, and data sources through the standardized Model Context Protocol.